Improvement in feed-water heaters



CHARLES S S. GRiFFiNG. improvement in Feed-Water Heaters. 114,132.

Patented April 25, 1871.

ama $iata -that (tithe OHARLE$ S. S. GRl-FFING, OF SALEM, OHIO, ASSIGNOR TO HIMSELF AND THOMAS SHARP, OF SAME PLACE.

Letters Patent No. 114,132, dated April 25, 1871.

IMPROVEMENT IN FEED-WATER HEATERS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that 1, Cinemas S. S. Gnrurnre, of Salem, in the county of Golumbiana and-State of Ohio, have invented certain Improvements in Feedater Heaters; and I do hereby declare that. the following is a full, clear, and exact description thereof, reference being had to the annexed drawing making part of this flow of the water, and the passages for its escape to the filtering-chamber.

igure 3 is a horizontal section on line y of ii. i 1, showing the supports for keeping the disks separated. t

Figure 4 IS a plan view, showing a disk with an additional series of obstructions to the flow of the water.

Figure 5 is a vertical section on line a a of fig. 4, showing the construction of the water course and the arrangement of the dams or obstructions.

Figure 6 is a plan view of a modified form of one of the disks, showing a scroll-framed passage for the water and the dams or obstructions therein.-

Figure 7 is a vertical section on line I) b of fig. 6, show ing the elevation of the inner portion of the groove for giving motion to the water, and the dams or obstructions for checking the flow of the lower stratum of the same.

Figure8 is a section of the upper portion of the heater and of its cap, showing the water-induction pipe and the escape-pipe for the steam.

' Corresponding letters refer to corresponding parts in the several figur A in the drawing refers to the case of the heater, which may be a cylinder of metal or of wood, and of any dimensions required. This cylinder is to be furnished with a lower head, A, which will eover'its .entire surface, and be provided with a flange or other suitable means for attaching it to the cylinder.

A refers to a cap which forms the cover or upper head of the heater, its diameter being somewhat larger than that of the cylinder to which it is attached by means of a ring, as shown in fig. 1. The upper portion of the cylinder or case of the heater extends up into the cap and nearly to its inner surface, leaving, however, between such surface and the end of the cylinder at sufiicient space for any steam which may pass up through the heater without being condensed to escape into the space between the cap and the upper portion of such cylinder, and out through an exhaust-pipe to. the atmosphere or to any point where it may be directed.

The advantage claimed for this construction and ar rangeinent of the cap is that it will retain the steam longer in the heater, and at the point near which the water is injected, and consequently will condense more of it, and thus return more of its heat to the genera tor than could otherwise be done. and at the same time will sooner heat the feed-water to such aternperature as to cause the earthy or mineral substances held in suspension by or in the water to be deposited.

In order to allow any water of condensation that may accumulate within the chamber at the top of the heater to escape, a series of holes is formed in the upper portion of the cylinder so as to permit it to pass into the interior thereof and mingle with the other water contained therein.

B B B refer to a series of concentrically or convolutely-grooved disks which are placed within the case or cylinder, as shown in fig. 1. The lower one of these disks is constructed as shown in figs. 1 and 2, its diameter being such as to cause it to fill the case, and it has through its outer concentric depression B a series of apertures, a a, for the discharge of the water into the filtering-chamber below.

From the hub or central projection of thisdisk there extends radially a bar or dam, the upper surface of whicb'is about flush with the upper surfaceof the concentric grooves or channels, its object being to stopthe flow of water around the disk and direct it from one'groove or channel B to another.

It will be seen upon referring tothe drawing that the water enters the inner concentric groove or channel B in the disk now being described, and in consequence of the fact that its lower-surface is higherthan those outside of it, itflows around in such groove until it comes in contact with the dam or obstruction above alluded to, where itis directed through the passage c, cut in the projection between this and the next outer channel into said groove or channel, through,

which it flows by virtue of its being higher than the one outside of it until it comes in contact with the dam or obstruction, when it flows into'another groove, and so on until it has reached the outer one of the grooves, when it passes down through the aperture a a into the filtering-chamber below.

The channels or openings 0 c from one concentric groove or channel to another are not cut so low as to orderthat thesolid matter in' the water may have more time in which to scttlc'and be deposited upon the sur fare of the disk. Owing to the fact thatthesurfii-cesofthese grooves or channels .are soarranged, in consequence of the peculiar construction of the disk, that each one into which the water enters is lower than the one through which it had previously traveled or flowed, it follows ,7 that a sufficient current will he maintained ='to keep the water in motion and yet not cause ,it to flow so -rapidlyas to prevent the deposition of the solid mat- 't'er contained therein. d

The disk next above the one just described is in all respects like it, except that it receivesthe water in its outer groove or channel, the surface of which is raised so as to cause thewater to 110W toward its central groovefrom which it passes through the tube b into the disk below. It also has an aperture through its center for-the passage of the steam which is intro-- duced-between these two disks.

The next of the series. of disks toward the upper end of the heater islike the one first described except that it issomewhat. smaller in diameter, the object being to allow the steam as it rises'to pass around its outer surface and from thence to the center of the nextof the series, and thus be caused to reverberate from the center to the circumference of the series of disks from the bottom to the top of the heater.

The remaining disks of the series are constructed and arranged in pairs like the two disks last described.

B B. refer to legs which are formed upon the under surface of the disks for the purpose of keeping them ference, and from the circumference to the center of the disks as'above described until it reaches the filteringchamber at the bottom, when it flows off through the. educjti'on-pipe'O', as shown in fig. l.

Dfrefers to the steam-induction pipe or nozzle, which is located upon the side of the cylinder, and may be so arranged as to induct between the two lower disks of the series, or at any other desired point from which it will pass-up through the heater, as shown by the arrows, and escapethrough the eduction-pipe D, if

anyportion of it should reach that point without be: iugcondenscd.

E refers to a water-chamber, which is. formed by a perforated ring, which is placed upon the lower head of the heater, the water .being taken ofi from this chamber to the generator.

- F F refer to a filtering-chamber, which surrounds the water-chamber, and may be filled with hay, straw, or any suitable material. 7

G refers to a spider, which is placed upon the upper surface of the upper disk, and between it and thecap or plate, its ofiice being to receive the pressure of the set-screw H and transmit it to the series of disks, in order that they may be held in their proper positions and be prevented from rising in the case if the press urc of the steam should at any time be sufiicient for that purpose.

The disks are prevented from turning in the case by means of a rib formedupon the interior of the same, which enters a cavity formed in the periphery of the disks, as shown .in figs. 2 and 3.

WVhat I claim as my invention, and desire to secure by Letters Patent, is-'- 1. The plates B B, with the winding water-channels, when such channels have a descending grade from the point at which the water falls upon. them to the point at which it leaves-them, substantially as and for the purpose set forth.

2. The plates B B, constructed with winding waterchannels, which have a descending grade as described, when low transverse damsare formed in such channels, substantially as and for the purpose set forth.

' 3. The arrangement of the cap or cover A wit reference to the cylinder A, it being such thata narrow space is formed for the escape of the steam from the body of the heater to the chamber which conducts it to the exhaust-pipe, substantially as and for the purpose set'forthQ 4-. The combination of the. set-screw .H, spider G, and disks B, substantially as and for the purpose specified. I

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. w

G. S. S. GRIFFING.

Witnesses:

I). B. Honnowmr, B. EDW. J. ErLs. 

